The invention relates to a
system for evaluating the performance of a
satellite navigation system. The
system has a real-time evaluation mode and a playback evaluation mode and comprises a
system positioning accuracy evaluation module, a system
velocity measurement accuracy evaluation module, a system availability evaluation module, a system completeness evaluation module, a configuration holding capacity evaluation module and a
multipath delay evaluation module, wherein the system positioning accuracy evaluation module evaluates system positioning accuracy by calculating a user equivalent range error and using a statistical method; the system
velocity measurement accuracy evaluation module obtains a system
velocity measurement accuracy conclusion by calculating a user pseudo-range error and using the statistical method; the system availability evaluation module respectively calculates the availability of the common mode and a
wide area differential mode to obtain a system availability conclusion; the system completeness evaluation module obtains a system completeness conclusion by calculating the completeness of three parts, namely a
satellite, a ground operational
control system and a
receiver; the configuration holding capacity evaluation module obtains a configuration holding capacity conclusion by counting
constellation occupied time percentage; and the
multipath delay evaluation module obtains a
multipath delay conclusion by calculating the
delay, amplitude and
phase difference of a multipath
signal relative to a direct
signal. The system is easy to implement in
engineering and can effectively evaluate the performance of the
satellite navigation system.